Abstract:
A configuration of detecting light from the front face of a light source is the best for confirming the variation of a light quantity, but when a plurality of light sources are present, as many detectors for checking a light quantity as the light sources are necessary and the apparatus configuration becomes complex. In the present invention, a detector 130 for checking a light source light quantity is installed in a reaction container transfer mechanism 117 used commonly for a plurality of detection sections, and the light quantities of light sources 124 are checked with the detector 130.
Abstract:
The invention relates to an apparatus, a method and a computer program for investigation of microtiter plates subjected to orbital shaking. The apparatus 10 comprises a housing 7, microtiter plates Ia, Ib, Ic, Id comprising wells, which may be arranged under respective clamp elements 2a, 2b, 2c, 2d arranged to hold the microtiter plate down to the frame 5. The apparatus 10 further comprises a processor 8 conceived to interrupt the motor of the frame 5 for a suitable interrupt period and to trigger the flatbed scanner 3a, 3b for generating two-dimensional images of respective bottoms of the wells present in the microtiter plates 1a, 1b, 1c, 1d. The flatbed scanner 3a, 3b is preferably mounted on respective frames 6a, 6b for support. The frames 6a, 6b may be attached to the housing 7. The processor 8 may be operable using a computer program 8a. The processor may be arranged to store the acquired images in a suitable memory unit 9. Alternatively or additionally, the processor 8 may be arranged to carry-out on-line or off-line analysis of the scan data using calibration data 8b and to adapt shaking mode using a signal S.
Abstract:
Improved devices, systems (14), and methods for sensing and/or identifying signals from within a signal detection region are well-suited for identification of spectral codes. Large numbers of independently identifiable spectral codes can be generated by quite small bodies (12a, 12b), and a plurality of such bodies or probes (12a, 12b) may be present within a detection region. Simultaneously imaging of identifiable spectra (60) from throughout the detection region allows the probes (12a, 12b) to be identified. As the identifiable spectra can be treated as being generated from a point source within a much larger detection field, a prism, diffractive grading, holographic transmissive grading, or the like (56) can spectrally disperse the images of the labels across a sensor surface. A CCD (18) can identify the relative wavelengths of signals making up the spectra. Absolute signal wavelengths may be determined by determining positions of the labels, by an internal wavelength reference within the spectra (60), or the like.
Abstract:
Devices, systems, methods (as depicted in figure 1a), and compositions of matter can track and/or identify a library of elements, particularly for use with fluids, particulates, cells, and the like. Signals from one or more semiconductor nanocrystals may be combined to define spectral codes. Separation of signal wavelengths within dedicated wavelength ranges or windows facilitates differentiation of spectral codes, while calibration signals within the spectral codes can avoid ambiguity. Modeling based on prior testing can help derive libraries of acceptable codes.
Abstract:
A sample container (20) containing a urine sample (22) is transferred by a sample positioning device to a liquid level sensing position. At this sensing position, the liquid level in the sample container is detected by a level sensor (39), followed by transfer of the sample container to a dipping position. A liquid level rising member (40) is then inserted to the sample container. While being held by a handling device, a test strip (23) is dipped into the sample in the sample container with the liquid level raised. Thereafter, the test strip (23) is lifted out of the sample container (20) and transferred to a measuring device. Color development in reagent sections on the test strip is measured by a photometer in terms of the reflected light strength. With the present invention, analysis using test strips can be implemented even when the sample volume sampled into the sample container is small.
Abstract:
Samples are prepared and applied to a cuvette, and the cuvette is translated in a given direction. Laser light is coupled to the sample through a Bragg cell, which causes the beam to scan the sample transversely to the given direction. Select optical parameters are monitored, and when they occur, the scan is stopped or slowed for a more complete analysis of the illuminated cell.
Abstract:
@ Light generated by one ormore chemical reactions in a discrete array is determined, both as to emissions per reaction and as to relative location of the reactions, e.g. using a system comprising:
a sample carrier having spaced-apart discrete areas each containing a reactant capable of emitting light photons if a reaction takes place; a photon receiver, for receiving photons emitted from each reaction simultaneously; and a signal generator coupled to the photon receiver, for generating a signal representing the x-y location of each reaction.
The signal generator may be a photomultiplier, charge-coupled device or vidicon tube. The invention is particularly suited to the determination of reactions and non-reactions, e.g. between an array of labelled antibodies and a specimen potentially containing one or more complementary antigens, in an immunoassay.
Abstract:
A photometric light absorption measuring apparatus includes a central processing unit sending generator frequency data to a high power generator that pulses a light source intermittently to irradiate a liquid sample contained in a transparent receptacle. The intermittent light beams pass through optical guides, focusing lenses, light amplifiers and a slit aperture. A diffraction grating disperses the light beams and a light detector receives the spectral components and generates corresponding intensity signals which are passed through an amplifier and supplied to an arithmetical unit which receives frequency power generation signals from the central processing unit. A misfire detector sends signals to the arithmetical unit when the light source fails to flash. The arithmetical unit preselects two spectral components and calculates the concentration of a corresponding preselected constituent of the liquid sample from the average mean value of the intensity differences between the two preselected spectral components corrected to eliminate intensity data corresponding to non-flashes of the light source.
Abstract:
Die Erfindung betrifft einen Objektträger als Teil einer Photo- oder Fluorometereinrichtung. In der Praxis werden die beiden Geräteeinrichtungen nebeneinander benötigt. Die Umrüstung von einem Photometer zu einem Fluorometer bzw. umgekehrt ist dabei aufwendig. Dies führte zu der Entwicklung einer Vielzahl lediglich objektgebundener Geräte beider Arten. Es ist deshalb Ziel der Erfindung, einen Objektträger zu nennen, der durch einfache Manipulation bzw. Umordnung praktisch jede der fallweise infrage stehenden Untersuchungen - unabhängig vom verwendeten Grundgerätetyp - zuläßt. Die erfindungsgemäße Lösung sieht einen als Blockeinheit 2 ausgebildeten Objektträger vor, der zur Aufnahme von Küvetten 6 oder Teststreifen 7 bestimmt ist, mit einschüben 5 für unterschiedliche Filter ausgerüstet ist und eine die Licht-oder Fluorescenzstrahlung 12, 12' zum Empfänger 10 führende Reflektionsumlenkeinrichtung 9 beinhaltet. Durch die einfache Umordnungsmoglichkeit an marktgängigen Geräten sind Veränderungen der eigentlichen Grundgerätespezifikationen durchführbar, so daß sich eine größere Bandbreite verschiedener Analysen im wesentlichen einheitlicher Grundgeräte durchführen läßt (siehe Fig. 1).
Abstract:
A configuration of detecting light from the front face of a light source is the best for confirming the variation of a light quantity, but when a plurality of light sources are present, as many detectors for checking a light quantity as the light sources are necessary and the apparatus configuration becomes complex. In the present invention, a detector 130 for checking a light source light quantity is installed in a reaction container transfer mechanism 117 used commonly for a plurality of detection sections, and the light quantities of light sources 124 are checked with the detector 130.